This article is courtesy of Popular Mechanics

Here are five outboards that might well give you a reason to repower your boat with something quiet, clean, and new.

Mercury Racing 450R



When Mercury introduced its new 4.6-liter V8 Verado last year, we knew it was only a matter of time before they upped the horsepower in a big way. Which they’ve now done with the 450R, which brings a 2.4-liter twin-screw supercharger and an available Sport Master gearcase to the party. The 450R is lightweight—with a 25-inch shaft, the 450R weighs 702 pounds. It’s also available in a 20-inch shaft, which has hilarious high-speed connotations for bass boats.

A three-year warranty indicates that Mercury Racing is confident that the 450R isn’t unduly stressed, despite its top-of-the-food-chain power rating. And that horsepower number is achieved on 89-octane pump gas, so it’s not like you have to trailer your boat over to the local drag strip to fill up on 100-octane race gas. With outboards, total horsepower is limited by what you can physically fit on the back of the boat—if you have a boat with quad 350s and repower with 450Rs, it’s like adding a whole extra engine.

Evinrude E-TEC G2 150



Four-cylinder four-strokes are basically the industry standard in this power category, but Evinrude goes in a decidedly different direction with its new 150 horsepower E-TEC. A 1.9-liter three-cylinder direct-injected two-stroke, the G2 E-TEC foregoes the G1’s V6 architecture (though they still sell that one, too, as well as the V6 G2 150 H.O.) in the name of efficiency. Which it delivers, to the tune of 12 mpg at a fast trolling speed on a 20-foot boat.

A 150 horsepower outboard can be deployed on a wide variety of boats, to the G2 can be controlled via a mechanical steering cable, external hydraulic, integrated power steering and even a tiller. Evinrude estimates that the onboard oil tank under the cowling should be good for 50 to 60 hours of use (a normal boating season for most people) and the maintenance interval is as close to zero-maintence as it gets—every five years or 500 hours.

Torqueedo Travel 1103C


While Torqueedo makes big outboards (up to 80-horsepower equivalent), those Deep Blue motors are aimed strictly at billionaires for their yacht tenders and possibly deep-pocketed folks in the import business who might have a use for a silent Zodiac. So while one of those 80-horse motors and its BMW-developed battery pack will run you more than $50,000, the new Travel 1103C starts at $2,699 and could find a home on any boat that weighs less than about 3,300 pounds.

With an onboard 915 Wh lithium battery, the 1103C can run for six hours at half-throttle, which could mean 18 miles of range (it depends on your boat). Besides dingies and sailboats, the Torqueedo would make an intriguing trolling motor or kicker on a small powerboat—it only makes 33 dB of noise and weighs less than 40 pounds. You can even extend your range by charging it with a solar panel while under way.

Yamaha XTO Offshore



Recent years have seen center consoles stretching beyond 50 feet and battle-wagon express boats moving from diesel power to outboards. So Yamaha built an engine designed for 50-plus foot boats, the 425 horsepower XTO Offshore. A 5.6-liter V8 with direct fuel injection, the XTO is a big fella—with its integrated power steering, it can weigh as much as 999 pounds. But that doesn’t stop some builders from hanging five of them on the stern, a setup that was on display on a Scout at the most recent Miami show.

According to Yamaha’s performance report, quad XTOs will push a 41-foot Regulator center console to 63.7 mph. You could also run a single one of these instead of, say, 200-hp twins—a single XTO on a 25-foot Sportsman topped out at 55 mph and got 2.83 mpg at a 29-mph cruise.

Suzuki DF350A



Suzuki is known primarily as a mainstream value brand, but the DF350A shows they’re intent on competing in the high-horsepower game. A big 4.4-liter naturally aspirated V6, the DF350A uses a pair of counter-rotating propellers to increase hookup and negate torque effects. That latter point is extra relevant for single-engine boats, where a DF350A could be an economical choice (both fiscally and in terms of efficiency).

On a Sea Pro 239, the DFA350A pushed the boat to 54.2 mph and got 3.35 mpg at a cruise speed in the high 20s. Quad 350s pushed an aluminum Gaudet 38 to 65.8 mph. Per Suzuki MO, the DF350A offers a lot of horsepower for the money. While MSRP is $31,565, we’ve seen new DF350As advertised for about $24,000.

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